CVE-2026-119660: yincongcyincong MuseBot

MuseBot before 2.0.0 Authentication Bypass via Hard-Coded Session Key

CVSS 9.3 CriticalCriticalEPSS 0.0052 · 44th percentile

Critical, because:

CVSS score 9.3: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 30 Oct 2026, 14:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
yincongcyincong	MuseBot	affected before 2.0.0 semver Other versions: unaffected

Identifiers

CVE-2026-119660

CNA

VulnCheck

Weakness (CWE)

CWE-1394

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.3	Critical	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
9.8	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0052, the 44th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

30 Oct 2026, 14:16 UTC Confirmed by the CVE List
30 Oct 2026, 15:16 UTC Confirmed by NVD

Sources

References from the CNA

github.com/yincongcyincong/MuseBot/issues/61 issue-tracking
github.com/yincongcyincong/MuseBot/commit/3e64518948fe7037058f07ef987d35216c3f0cae patch
github.com/yincongcyincong/MuseBot/commit/139f6158b50283b983d76976f593a3a09a064681 patch
github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/conf/conf.go#L28 technical-description
github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/controller/login.go#L19-L88 technical-description
hackmd.io/@hieuPenguinnn/musebot-admin-default-session-key-auth-bypass third-party-advisory
github.com/yincongcyincong/MuseBot product
www.vulncheck.com/advisories/musebot-before-2.0.0-authentication-bypass-via-hard-coded-session-key third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.